Bfflink reviews
Bfflink reviews: 44 independent lab tests across 2 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Bfflink legit? Lab record: Mixed
How we rate- 44 independent tests
- 23 of 39 lots filled to label
- Median purity 99.9%
- 1 of 2 products graded D or E
Some of Bfflink's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tirzepatide
Bfflink graded D. Paradigm Peptide's Tirzepatide graded A across 10 tests, $4.97 / mg.
Buy from Paradigm PeptideAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Bfflink graded D or E, these shops' samples of the same peptide graded A or B. Ordered by grade, then price per mg. Partner status never changes the order.
Tirzepatide
Bfflink: grade DBfflink products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open Bfflink's site.
- RetatrutideBGOOD
- Tests
- 24
- Passed
- 82.6%
- TirzepatideDPOOR
- Tests
- 20
- Passed
- 63.2%
What the testing shows
Across 39 measured samples from Bfflink, 16 came in more than 5% under the quantity on the label (41%). Another 9 measured more than 5% over. Purity across 41 readings ran from 98.23% to 99.95%, median 99.9%. Samples span Dec 2025 to Sep 2026.
- Under label
- 16/39
- Median purity
- 99.9%
- Latest sample
- Sep 2026
more than 5% short
98.23%–99.95% range
first tested Dec 2025
Our read on Bfflink
31 of Bfflink's 42 graded samples passed (74%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are improving: 89% passed over the latest six months, up from 63% before.
When a sample failed, the most common reason was purity under 99.5% (8 times).
1 sample failed identity, meaning the lab could not confirm the vial held the labelled peptide.
Against the 302 shops with at least five graded tests, Bfflink's pass rate is at or above 55% of them, and it has more tests on record than 74% of them.
When and how Bfflink was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (32), BTLabs (12)
- Who sent the samples
- buyers 100%
- Batches covered
- 37 distinct batch numbers; 12 checked for endotoxins
Why Bfflink's failed samples failed
The 6 most recent failed tests, with the lab's reason.
Tirzepatide · Jul 13, 2026
amount in the vial more than 35% off the label
Tirzepatide · Jun 2, 2026
purity under 99.5%; amount in the vial more than 35% off the label
Tirzepatide · Mar 10, 2026
purity under 99.5%
Tirzepatide · Mar 3, 2026
the lab could not confirm it was the labelled peptide
Tirzepatide · Feb 26, 2026
purity under 99.5%
Tirzepatide · Feb 26, 2026
purity under 99.5%
Lab testing results
Independent results across 2 products.
Individual lab tests
Date
9/18/2026
Purity
99.9%
Quantity
24 mg → 25.5 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Blue cap
Date
7/20/2026
Purity
99.9%
Quantity
60 mg → 69.1 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Blue cap
Date
7/13/2026
Purity
99.9%
Quantity
60 mg → 95.7 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Blue cap
Date
6/17/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
No label / Silver crimp / Blue cap
Date
6/17/2026
Purity
99.9%
Quantity
10 mg → 8.6 mg
Lab
BTLabs
Vial
No label / Silver crimp / Blue cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideNo label / Silver crimp / Blue cap | 9/18/2026 | 10.0 | 99.9% | 24 mg → 25.5 mg | Krause Analytical | View |
| RetatrutideNo label / Silver crimp / Blue cap | 7/20/2026 | 10.0 | 99.9% | 60 mg → 69.1 mg | Krause Analytical | View |
| TirzepatideNo label / Silver crimp / Blue cap | 7/13/2026 | 10.0 | 99.9% | 60 mg → 95.7 mg | Krause Analytical | View |
| TirzepatideNo label / Silver crimp / Blue cap | 6/17/2026 | — | — | BTLabs | View | |
| TirzepatideNo label / Silver crimp / Blue cap | 6/17/2026 | 10.0 | 99.9% | 10 mg → 8.6 mg | BTLabs | View |
Which Bfflink products tested best
Retatrutide has the strongest record, graded A or B.
Tirzepatide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from Bfflink
If you order from Bfflink, the A- and B-graded products are the safer picks on this record. For the weaker ones, the better-tested options on this page come from other shops.
We don't track Bfflink's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.bfflink.com. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track Bfflink
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Bfflink: common questions
Is Bfflink legit?
We rate lab records, not businesses. Mixed lab record: 44 independent tests, 23 of 39 lots filled to label, median purity 99.9%, 1 of 2 products graded D or E. Each result links to its original certificate in the table above.
What do Bfflink reviews say?
We don't hold scored customer reviews for Bfflink yet. The independent lab results on this page are the evidence we have.
Which Bfflink peptides tested best?
We have graded 2 Bfflink products. Retatrutide graded A or B. Tirzepatide graded D or E.
Is there a Bfflink coupon code?
We don't have a verified Bfflink coupon code. A discount changes the price, not what is in the vial.
Ordering from Bfflink?
Mixed lab record: 44 independent tests, 23 of 39 lots filled to label, median purity 99.9%, 1 of 2 products graded D or E.